| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separator which is made thin while satisfying an insulation function, an electrolyte holding function, and a shutdown function, and also to provide a nonaqueous electrolyte battery using the separator. <P>SOLUTION: In the separator in which a nonaqueous electrolyte is impregnated in a status being interposed between a positive electrode and a negative electrode, the separator has a structure in which a plurality of microporous films are laminated, at least one microporous film constitutes a reinforcing film made of a polyolefine material, and at least one microporous film of the rest microporous films constitutes a heat-resistant film made of a material with a melting point of 200°C or higher. It is regulated so that the value of multiplication of the thickness (μm) of the separator and the porosity (%) of the separator is 792 μm% or more. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
